US1704127A - Electric foot warmer - Google Patents

Description

March 5, 1929. w, w, HICKS 1,704,127

ELECTRIC FOOT WARMER Filed July 8, 1926 ZiMMQ PIE- 3 INVENTOR W/W/k'm llsy #I C/rs HIS ATTORNEY Patented Mar. 5, 1929.

UNITED STATES PATENT OFFICE.

WILLIAM WESLEY HICKS, OF SAN FRANCISCO, CALIFORNIA.

ELECTRIC FOOT WABMEB.

Application filed July 8,

This invention relates to an electrical heating device. and more particularly to one that is adapted to impart heat to the feet of a person, when such a person is sitting or standing.

It is a matter of common observation that when the nether extremities are kept warm, there is a comfortable feeling even when the rest of the body is cooler than normal. In order to take advantage of this, it has been roposed to supply foot warmers, upon which the feet can rest when the user is sitting down; and which can be placed underneath the feet when the user is standing. Such a device is especially useful during these periods of the year when continual artificial heating is inadvisable, while yet certain periods of the day may be otherwise too cool for comfort.

It is one of the objects of my invention to provide a simple and inexpensive elect cal heater that is especially adapt d to the functions outlined.

It is another object of my invention p a heater that can withstand the ordinary careless handling accorded. devices of character.

heater is preferably built in the form of a plate upon which the feet 1,.211'1 P connections lead in at one edge plate. ihese connec ions form a convcn ransporting the handle i no preca'utio: e readily torn 0 or loosened. ingly another object of my invention to 1 ride a foot warmer with rugged lead in connections that can be used to *ansport the device without danger of the parts.

It is still another object of inve t on to provide a -foot warmer in which the neat is imparted the entire outer active surface by conduction from a relatively small heating element, whereby the cost 'he eloinent can be maintained a low value.

My invention possesses many other 5 tag-es, and has other i made more easily apparent from consideration of one embodiment of my invention. For this purpose I have shown a form in the drawings accompanying and forming part of the present specification. 1 shall now proceed to describe this form in detail, which ill ":strates the general principles of my invention; but it is to be understood that this detailed description is not to be taken 1928. Serial 110 121,177.

in a limiting sense. since the scope of my invention is best defined by the appended claim.

Referring to the drawings:

Figure l is a sectional view of one embodiment of my invention;

Fig. 2 is an enlarged detail section, illustrating the-manner in which the lead-in is constructed Fig. 3 is a bottom plan view of the device, on a somewhat reduced scale;

Fig. 4 is a detail, with a portion of the device removed, to disclose the manner in which the apparatus is wired; and

Fig. 5 is a fragmentary view, taken from plane 55' of Fig. 1.

The entire heater has a box-like, shallow casing 11, made from thin heat conducting material, such as brass or aluminum. The main surface of this casing forms its upper side, upon which feet are intended to rest. A thin l- ,ulating material I the inla er serves eflior, yet it does of heat enient la, such as mi ner surface. ciently as an electrical insul not interfere with e conducti ferably consists of is convoluted on Ch, held therenner.

bly placed direct s to be in proper respect to the From this so a The outer layer 16 overlies the blocks 14, i5 and 1'1, and serves also to insulate the heat from the bottom plate l8, serving as a cover. This plate is shown as of metal, fitting rather closely within casing 11, to which if desired it can be soldered. However, I show a plurality of fastening devices, such as fiat head bolts 19, which pass through the casing 11 and thread into cover 18 to clamp the various elements in the easthe heating unit therein, to permitthe cable to enter.

ing together. i The bolts 19 are spaced near the edge of casing 11, and extend beyond cover 18. On their extensions arefastened crown nuts 20 which serve as feet for the entire war'nier/ These nuts are preferably made from metal or bakelite, whereby they also serve eflicientlyto prevent material con- .duction of heat to the floor; and they also serve as feet for spaci-ng the device from the floor.

The manner in;which the connections are led, into the heating unit 13 will now be described. For this purpose, I show a steel armored cable 21, entering into the edge of the casing 11 and projecting therein for a considerable distance. The casing 11, as clearly shown in Fig. 5, has a slot 22Fcut "thermore,'the top of casing 11 is cut away in a curveto fit around cable 21, as indicated at 23; and a similar groove 24: is cut in cover 18. Thus the cable 21 is securely clamped between the two grooves when the bolts '19 I are; fastened down. The \entire assembly can be ,readily transported by grasping cable 21 as a handle, which cable is purposely led into," the center of one of the ed es of casing 11=so as to keep the assemb y balanced when suspended by cable 21, on an axis opening.

The wires 25 from cable 21 are led to a pair of posts, 26 and 27, in block 16, projectpassing througlnthe cable ing into a recess 28 in the lower side of in-'- s lation 16. The post 26 can be directly connected to one terminal of the heating unit 13. The other post 27 however is shown as connecting to a fuse link 28, the

curved seat, cooperating to clamp the cable.

tightly, whercby'it can be used as a handle for the device. In testimony whereof I have hereunto set my hand.

' WILLIAM WESLEY HICKS.)

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